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Shaft guide

UST Mamiya Shaft Guide: Lin-Q, Helium, Proforce, Recoil and Dart

UST Mamiya makes the graphite iron shaft more players use than any other, the Recoil, and a driver line that runs from a 44 g Helium to an 88 g Lin-Q PowerCore White. This guide sorts every UST line we carry by what it does: launch, spin, weight and the swing it suits. Each section links to the collection, and every shaft can ship raw or built with your adapter and grip.

UST Mamiya Shaft Guide: Lin-Q, Helium, Proforce, Recoil and Dart

How UST labels flex

UST prints an F number on most current shafts instead of a letter. F1 is ladies, F2 is senior (A), F3 is regular, F4 is stiff and F5 is X-stiff. The series number is the weight class: a Lin-Q 6 series is in the 60 g range, a Recoil Dart 90 is about 90 g. Our product pages show both the F number and the letter in the dropdown so you can match whichever your current shaft uses. If you are unsure which flex you need, the 2-minute shaft quiz will tell you.

Lin-Q: the driver and fairway line

Lin-Q is UST's tour driver shaft. Every color is built on its own mandrel with its own layup, so the colors are different shafts, not paint jobs. The M40X versions use Toray's M40X carbon in the tip for lateral stability; PowerCore is the same idea in a slightly more forgiving profile at a lower price. Pick by launch first, then weight.

Lin-Q M40X

UST Mamiya

Lin-Q M40X

  • Weight57 g to 75 g
  • M40X RedMid-high launch, mid spin · Flex: 5 A/S, 6 R/S/X, 7 S
  • M40X BlueMid launch, low spin · Flex: 6 R/S/X, 7 S/X
  • M40X WhiteLow-mid launch, low-mid spin · Flex: 6 R/S/X, 7 S/X
Lin-Q PowerCore

UST Mamiya

Lin-Q PowerCore

  • PowerCore RedHigh launch, low spin · Flex: 5 A/R/S, 6 R/S/X, 7 R/S/X · 57 g to 77 g
  • PowerCore BlueMid launch, low spin · Flex: 5 A/R/S, 6 R/S/X, 7 R/S/X · 56 g to 78 g
  • PowerCore WhiteLow launch, low spin · Flex: 6 R/S/X, 7 R/S/X, 8 S/X · 65 g to 88 g
  • PowerCore hybridFlex: 75 A/R/S/X, 90 R/S/X

Blank launch and weight cells are models UST has not published a rating for on the pages we work from. Ask us before you order one of those and we will measure the shaft we have in stock. The full line is in the Lin-Q collection and the PowerCore collection.

Red if you need height

M40X Red and PowerCore Red launch highest with the spin held down. For a player under about 105 mph who is losing carry, Red is where to start.

Blue if you are not sure

Mid launch, low spin, the widest weight range. The PowerCore Blue in 5 A through 7 X covers most swings we fit.

White or TSPX Black to flatten it

Low launch and low spin for the player who already launches high or spins too much. The TSPX Black runs up to 85 g in 8 X for the fastest swings.

Helium and Attas Speed: ultralight, high launch

Helium is UST's lightest driver shaft. It uses 25% less resin than a standard layup to cut weight without going soft, and it is counterbalanced, so a light head feels less whippy at the top. The Attas Speed 23 is the Japanese-market equivalent at about 48 g with a constant taper for feel. Both are built for the moderate and slower swing that wants more clubhead speed and more height, and both come in senior and ladies flexes.

Helium collection: all Helium shafts. For other senior-flex driver options across brands, see our senior flex driver shaft guide.

Proforce V2: the mid-launch workhorse

Proforce has been in UST's line for over twenty years and the V2 is the one we sell most of. It is a mid-launch, low-torque driver and fairway shaft across ten weight-and-flex options, from a 56 g senior to an 86 g X. The HL version launches higher with a stiffer tip to keep spin in check, which makes it the better pick for the player who needs height but spins the ball too much already. The Prime M40X adds M40X carbon to the Proforce profile in three heavier builds with published torque.

Full line: Proforce collection.

Recoil: graphite iron shafts

Recoil is the reason most golfers know UST. The wall of the shaft is built to compress and spring back through impact, which is where the name comes from, and it is the graphite iron shaft we recommend first to a player coming out of steel. The current Recoil Dart line comes two ways: taper tip (.355") made to length for each iron, and parallel tip (.370") that you trim. SmacWrap adds a damping layer for feel. The constant-weight Recoil 65 through 125 are the older taper-tip models, still stocked.

Recoil Dart (current)

UST Mamiya

Recoil Dart (current)

  • LaunchMid-high in every weight
Recoil constant weight (taper)

UST Mamiya

Recoil constant weight (taper)

  • LaunchMed-high
  • Weight / torque64 g to 65 g, torque 3.8
  • Recoil 65Tip: .355" taper, one shaft per iron · Flex: F2, F3, F4
  • Recoil 80Tip: .355" taper, one shaft per iron · Flex: F3, F4
  • Recoil 95Tip: .355" taper, one shaft per iron · Flex: F3, F4
  • Recoil 110, Recoil 125Tip: .355" taper · Flex: F4; F4, F5

Taper-tip shafts come one per iron with the butt left long; see how tapered tip shaft lengths work. Full line: Recoil collection. New to graphite irons? Start with graphite vs steel iron shafts and the graphite iron shaft installation guide.

Dart V: the players' graphite iron shaft

Dart V is the Recoil idea built for the faster swing. UST's Dual Action Recoil Technology removes the inconsistent sections of the shaft for tighter dispersion, and the weights run 90 to 120 g with lower torque than the Recoil Dart. It launches mid (mid-low in the 120) and is fit from 80 mph driver speed up. If you play a 105 g to 120 g steel iron shaft and want graphite without the ballooning, this is the one.

Dart V 90

UST Mamiya Dart V

  • Dart V 90Tip: .355" taper, 2-iron to wedge · Mid · Flex and fit speed: F3 (80 to 95 mph driver), F4 (90 to 105), F5 (105+) · about 87 g
  • Dart V 105Tip: .355" taper, 2-iron to wedge · Mid · Flex and fit speed: F4, F5 · about 104 g
  • Dart V 120Tip: .355" taper, 2-iron to wedge · Mid-low · Flex and fit speed: F4, F5 · about 120 g
  • Dart V scoring wedgeTip: .355" taper, 36" · Flex and fit speed: 105 and 120 wedge flex

Full line: Dart V collection.

Value lines and the putter shaft

UST also makes the shafts a lot of club builders use by default. The Competition Series 65 (A/L and R/S combination flex, wood and iron), the DHI series driver, hybrid and iron shafts, the MP5 and MP6, and the 55 Gold and 65 Gold driver shafts are all in the UST collection. They are not tour shafts and are not priced like them; they are the right answer for a build where the head cost more than the shaft should.

For putters, the UST Mamiya All-In is a low-torque carbon fiber putter shaft in three builds: 126 g graphite (36", .370"), 109 g with a steel tip (35", .370"), and a 90 g 30" retrofit that fits over an existing shaft. Our putter shaft guide covers where it fits.

UST Mamiya shaft spec table

Every UST Mamiya shaft on this page in one list: tip, launch and spin, the flexes we stock, weight and torque, from the maker's spec charts and our product pages. A blank cell is a figure the maker has not published. Click a model to open it.

Model
Line
Tip
Launch / spin
Flex
Weight
Torque
Note
Lin-Q M40X TSPX
.335" parallel
Low launch, low spin
6 S/X, 7 S/X, 8 X
66 g to 85 g6 S 66 g, 6 X 67 g, 7 S 76 g, 7 X 77 g, 8 X 85 g
3.6 to 3.06 S 3.6, 6 X 3.5, 7 S 3.3, 7 X 3.2, 8 X 3.0
46" raw. 3.0" parallel tip section.
Lin-Q M40X TSPX
.335" parallel
Mid launch, mid-low spin
6 S, 7 S
67 g (6 S), 78 g (7 S)
4.0 (6 S), 3.0 (7 S)
46" raw. 3.0" parallel tip section.
Lin-Q M40X TSPX
.335" parallel
Mid-high launch, mid spin
6 R/S/X, 7 S/X
66 g to 76 g6 R 66 g, 6 S 67 g, 6 X 68 g, 7 S 76 g, 7 X 76 g
4.1 to 3.8all 6 series 4.1, both 7 series 3.8
46" raw. 3.0" parallel tip section.
Lin-Q M40X TSPX
.370" parallel
Low-mid launch, mid-low spin
85 R/S/X, 100 S/X
83 g to 101 g85 R 83 g, 85 S 85 g, 85 X 86 g, 100 S 99 g, 100 X 101 g
2.4 (all)
42" raw. 5.5" parallel tip section.
Lin-Q M40X TSPX
.370" parallel
Mid-high launch, mid spin
75 A/R, 85 S/X
70 g to 85 g75 A 70 g, 75 R 73 g, 85 S 82 g, 85 X 85 g
4.3 (75 A/R), 2.9 (85 S/X)
42" raw. 5.5" on 75, 4.0" on 85.
Lin-Q M40X
.335" parallel
Mid-high launch, mid spin
5 A/S, 6 R/S/X, 7 S
57 g to 75 g5 A 57 g, 5 S 58 g, 6 R 66 g, 6 S 67 g, 6 X 67 g, 7 S 75 g
5.8 to 4.15 A 5.8, 5 S 5.6, 6 R 5.0, 6 S 5.0, 6 X 4.9, 7 S 4.1
46" raw. 3.0" parallel tip section.
Lin-Q M40X
.335" parallel
Mid launch, low spin
6 R/S/X, 7 S/X
64 g to 76 g6 R 64 g, 6 S 66 g, 6 X 67 g, 7 S 74 g, 7 X 76 g
4.9 to 4.16 R 4.9, 6 S 4.8, 6 X 4.7, 7 S 4.1, 7 X 4.1
46" raw. 3.0" parallel tip section.
Lin-Q M40X
.335" parallel
Low-mid launch, low spin
6 R/S/X, 7 S/X
66 g to 75 g6 R 66 g, 6 S 67 g, 6 X 67 g, 7 S 75 g, 7 X 75 g
4.9 to 4.06 R 4.9, 6 S 4.9, 6 X 4.8, 7 S 4.1, 7 X 4.0
46" raw. 3.0" parallel tip section.
Lin-Q PowerCore
.335" parallel
High launch, low spin
5 A/R/S, 6 R/S/X, 7 R/S/X
57 g to 77 g5 A 57 g, 5 R 58 g, 5 S 59 g, 6 R 64 g, 6 S 66 g, 6 X 69 g, 7 R 75 g, 7 S 76 g, 7 X 77 g
3.9 to 3.15 series 3.9, 6 R 3.7, 6 S/X 3.6, 7 series 3.1
46" raw. 3.0" parallel tip section.
Lin-Q PowerCore
.335" parallel
Mid launch, low spin
5 A/R/S, 6 R/S/X, 7 R/S/X
56 g to 78 g5 A 56 g, 5 R 58 g, 5 S 59 g, 6 R 68 g, 6 S 69 g, 6 X 73 g, 7 R 76 g, 7 S 77 g, 7 X 78 g
4.3 to 3.15 A/R 4.3, 5 S 4.2, 6 series 3.8, 7 series 3.1
46" raw. 3.0" parallel tip section.
Lin-Q PowerCore
.335" parallel
Low launch, low spin
6 R/S/X, 7 R/S/X, 8 S/X
65 g to 88 g6 R 65 g, 6 S 67 g, 6 X 70 g, 7 R 76 g, 7 S 77 g, 7 X 79 g, 8 S 87 g, 8 X 88 g
3.7 to 2.96 R 3.7, 6 S/X 3.6, 7 series 3.0, 8 series 2.9
46" raw. 3.0" parallel tip section.
Lin-Q PowerCore
.370" parallel
Mid-high
75 A/R/S/X, 90 R/S/X
71 g to 90 g75 A 71 g, 75 R 74 g, 75 S 77 g, 75 X 79 g, 90 R 84 g, 90 S 86 g, 90 X 90 g
4.3 to 3.775 A/R 4.3, 75 S/X 4.2, 90 R 3.8, 90 S/X 3.7
42" (75 series), 41" (90 series). 5.5" parallel tip section.
Earlier Lin-Q
.335" parallel
Mid-low launch (6 series), low (7 series); mid-low spin
6 S/X, 7 S/X
70 g (6 S, 6 X), 78 g (7 S, 7 X)
3.2 (6 S, 6 X), 3.1 (7 S, 7 X)
46" raw. 3.0" parallel tip section. 2019 graphics.
Earlier Lin-Q
.335" parallel
Mid launch, mid spin
6 R/S/X, 7 S/X
67 g to 78 g6 R 67 g, 6 S 67 g, 6 X 68 g, 7 S 76 g, 7 X 78 g
5.0 to 3.36 R 5.0, 6 S 4.8, 6 X 3.8, 7 S 4.1, 7 X 3.3
46" raw. 3.0" parallel tip section. 2019 graphics.
Helium
.335" parallel
High
4 L/R, 5 A/R/S
44 g to 56 g4 L 44 g, 4 R 45 g, 5 A 52 g, 5 R 54 g, 5 S 56 g
6.2 (4 series), 6.0 (5 series)
46" raw. 3.0" parallel tip section. Counterbalanced.
Helium
.335" parallel
High
4 L/R, 5 A/R/S
43 g to 56 g4 L 43 g, 4 R 46 g, 5 A 52 g, 5 R 55 g, 5 S 56 g
6.3 (4 series), 5.7 (5 series)
46" raw. 3.0" parallel tip section. Prior-generation Helium, counterbalanced.
Helium
.335" parallel
High
4 A
45 g (4 A)
6.3
46" raw. 3.0" parallel tip section. Same build as Nanocore Black 4 A, ion-plated.
Helium
.370" parallel
High
50 L, 60 A/R
53 g to 63 g50 L 53 g, 60 A 59 g, 60 R 63 g
4.2 (50 L), 4.6 (60 A), 4.5 (60 R)
40" (50), 41" (60). 5.5" parallel tip section.
Helium
.335" parallel
High
40 L/A/R/S (5 A/R/S on the assembled page)
47 g to 49 g40 L 47 g, 40 A 48 g, 40 R 48 g, 40 S 49 g
5.2 to 4.9L 5.2, A 5.1, R 5.0, S 4.9
46" raw (45" in L). 2" parallel tip section.
Helium
.370" parallel
High
40 L, 50 A/R/S
51 g to 60 g40 L 51 g, 50 A 55 g, 50 R 57 g, 50 S 60 g
4.7 (all)
42" raw. 5.5" parallel tip section. One shaft for irons and hybrids.
Proforce
.335" parallel
Mid (5 to 7 series), Low-mid (8 series)
5 A/R/S, 6 R/S/X, 7 S/X, 8 S/X
56 g to 86 g5 A 56 g, 5 R/S 57 g, 6 R 65 g, 6 S/X 66 g, 7 S/X 76 g, 8 S/X 86 g
3.7 to 1.85 series 3.7, 6 R/S 3.0, 6 X 2.9, 7 series 2.2, 8 series 1.8
46" raw. 4.0" parallel tip section.
Proforce
.335" parallel
High
5 L/A/R/S, 6 R/S/X
51 g to 65 g5 L/A 51 g, 5 R/S 52 g, 6 R 63 g, 6 S 64 g, 6 X 65 g
5.1 to 4.25 L 5.1, 5 A 4.5, 5 R/S 4.2, 6 R 4.3, 6 S/X 4.2
46" raw. 4.0" parallel tip section.
Proforce
.370" parallel
Mid-high
85 A/R/S/X
79 g to 90 g79 g A, 84 g R, 86 g S, 90 g X
3.2 (all)
41" raw. 3.5" parallel tip section.
Proforce
.335" parallel
Mid
6 R/S
65 g (6 R), 66 g (6 S)
3.0 (6 R, 6 S)
46" raw. 4.0" parallel tip section. 2019 graphics.
Proforce
.335" parallel
Mid
65 R/S, 75 X
69 g (65 R), 72 g (65 S), 75 g (75 X)
4.5 (65 R, 65 S), 3.9 (75 X)
44" raw. 3.0" parallel tip section. Tip trim: driver 0", 3-wood 0.5", 5- and 7-wood 1".
Recoil Dart
.355" taper, one shaft per iron
Mid-high
F2, F3
65 g (F2), 66 g (F3), constant through the set
3.1 (both)
40.5" (3-iron) to 37" (wedge). Constant weight.
Recoil Dart
.355" taper, one shaft per iron
Mid
F3, F4
90 g (F3 and F4), constant through the set
3.0 to 2.5 (F3), 2.9 to 2.3 (F4), falling from 2-iron to wedge
41" (2-iron) to 37" (wedge). Constant weight, butt trim only.
Recoil Dart
.355" taper, one shaft per iron
Mid
F4, F5
106 g (F4 and F5), constant through the set
2.0 (F4 2.1 in the 2-iron)
41" (2-iron) to 37" (wedge). Constant weight, butt trim only.
Recoil Dart
.370" parallel
High (55), Mid (65 and 75)
55 L, 65 A/R/S, 75 A/R/S
55 g to 78 g55 L 55 g, 65 A 61 g, 65 R 64 g, 65 S 68 g, 75 A 70 g, 75 R 72 g, 75 S 78 g
5.2 to 3.955 L 4.2, 65 A/R 5.2, 65 S 4.9, 75 series 3.9
40" (55), 41" (65 and 75). 5.5" parallel tip section.
Recoil Dart
.370" parallel
Mid
70 A/R/S, 80 A/R/S
63 g to 79 g70 A 63 g, 70 R 65 g, 70 S 69 g, 80 A 72 g, 80 R 74 g, 80 S 79 g
5.0 to 3.870 A/R 5.0, 70 S 4.7, 80 series 3.8
41" raw. 5.5" parallel tip section.
Recoil Dart
.370" parallel
High
50 F1, 60 F2/F3/F4
54 g to 67 g50 F1 54 g, 60 F2 60 g, 60 F3 64 g, 60 F4 67 g
4.2 (50 F1), 4.6 (60 F2), 4.5 (60 F3/F4)
40" (50), 41" (60). 5.5" parallel tip section.
Recoil Dart
.370" parallel
Mid-high
55 L, 65 A, 75 R, 85 S, 95 X
56 g to 91 g55 L 56 g, 65 A 68 g, 75 R 77 g, 85 S 83 g, 95 X 91 g
3.8 to 2.93.8 55/65, 3.1 75/85, 2.9 95
41" (55), 42" (65 to 95). 5.5" parallel tip section.
Recoil ES and SmacWrap
.370" parallel
Mid-high
F2 (A), F3 (R)
68 g (F2), 70 g (F3) in IP finish
4.1 (both)
41" raw. 5.5" parallel tip section. IP finish; black finish about 1 g lighter.
Recoil ES and SmacWrap
.370" parallel
Mid-high
F3 (R), F4 (S)
83 g (F3), 87 g (F4) in IP finish
3.6 (F3), 3.5 (F4)
41" raw. 5.5" parallel tip section. IP finish; black finish about 1 g lighter.
Recoil ES and SmacWrap
.370" parallel
Mid-high
65 A, 75 R, 85 S
66 g (65 A), 76 g (75 R), 82 g (85 S)
3.9 (65 A), 3.1 (75 R), 3.0 (85 S)
42" raw. 5.5" parallel tip section.
Recoil ES and SmacWrap
.370" parallel
High (460 ES); Mid-high (ZT9)
460 ES: A/R/S; ZT9: 460 A/R, 470 S
460 ES: 63 g (A), 64 g (R), 67 g (S); ZT9: 62 g (460 A), 69 g (460 R), 72 g (470 S)
460 ES: 4.8 (A/R), 4.6 (S); ZT9: 4.6 (460 A), 4.0 (460 R), 3.9 (470 S)
41" raw. 5.5" parallel tip section.
Recoil constant weight
.355" taper, one shaft per iron
Mid-high
F2, F3, F4
64 g (F2), 65 g (F3), constant through the set
3.8 (3.7 in F3 9-iron and wedge)
40.5" (3-iron) to 37" (wedge). Constant weight.
Recoil constant weight
.355" taper, one shaft per iron
Mid
F3, F4
80 g (F3 and F4), constant through the set
3.4 to 2.8, falling from 3-iron to wedge
40.5" (3-iron) to 37" (wedge). Constant weight.
Recoil constant weight
.355" taper, one shaft per iron
Mid
F3, F4
90 g (2-iron) to 96 g (wedge), both flexes
4.1 to 2.7, falling from 2-iron to wedge
41" (2-iron) to 37" (wedge). Weight rises through the set.
Recoil constant weight
.355" taper, one shaft per iron
Mid (110); Mid-low (125)
110: F4; 125: F4, F5
110 F4: 105 g (2-iron) to 111 g (wedge); 125: 118 g to 121 g (F4), 122 g to 125 g (F5)
110 F4: 3.8 to 2.6, falling through the set; 125: 2.2both
41" (2-iron) to 37" (wedge). UST lists the 125 as Recoil 125 Prototype.
Dart V
.355" taper, one shaft per iron
Mid
F3 (80 to 95 mph driver), F4 (90 to 105), F5 (105+)
87 g (F3), 88 g (F4)
2.9 to 2.5 (F3), 2.9 to 2.3 (F4), falling from 2-iron to wedge
41" (2-iron) to 37" (wedge). UST fits F3 to 80 to 95 mph driver speed, F4 to 90 to 105.
Dart V
.355" taper
Mid
105 and 120 wedge flex
104 g (105), 120 g (120)
2.0 (105), 1.5 (120)
36" raw. Wedge build matching the Dart V iron sets.

Raw or assembled

Every UST driver, fairway and hybrid shaft on this page can be ordered built: adapter for your head (Callaway, Cobra, Mizuno, Ping, PXG, Srixon, TaylorMade, Titleist, Tour Edge or Wilson), cut to your length, grip installed. The assembled UST driver shafts collection and the assembled UST hybrid shafts collection hold the built versions. If you are not sure which adapter you need, the Titleist, Ping, Cobra, TaylorMade and Callaway adapter guides cover it.

Not sure where to start?

Tell us your driver speed, what you play now and what the ball is doing, and we will narrow it to two UST shafts. Text (408) 475-7570. We have been fitting UST since the original Proforce and the questions have not changed much: height, spin, weight, in that order.

FAQ

UST Mamiya shaft FAQ

What do the F numbers on UST Mamiya shafts mean?

They are flex codes. F1 is ladies, F2 is senior or A, F3 is regular, F4 is stiff and F5 is X-stiff. The series number next to it is the weight class, so a Lin-Q 6 series F4 is a 60 g class stiff shaft.

What is the difference between Lin-Q Red, Blue and White?

They are separate shafts built on different mandrels, not color variants. Red launches highest with low spin, Blue is mid launch and low spin, White is the lowest launching and lowest spinning. In the M40X TSPX range, Black takes the low-launch, low-spin role and runs up to 85 g.

Is the UST Recoil a good iron shaft for slower swing speeds?

Yes. The Recoil Dart 65 and the parallel Recoil Dart 55 and 65 series come in ladies, senior and regular flex at 55 g to 65 g, and the Recoil line launches mid-high. Players losing height with steel irons are the ones who usually switch to it.

What is the difference between Proforce V2 and Proforce V2 HL?

The V2 is mid launch in the 5, 6 and 7 series and low-mid in the 8, with weights from 56 g to 86 g. The HL launches higher with a stiffer tip to hold spin down, and runs lighter, 51 g to 64 g, with a ladies flex in the 5 series.

Can I buy a UST shaft already installed with an adapter for my driver?

Yes. Every UST driver, fairway and hybrid shaft we sell can be ordered assembled with the adapter for your head, cut to your length, with a grip installed. Choose the adapter brand, length and grip from the dropdowns on the assembled product page.